Ferroelectric chiral smectic liquid crystal composition and liquid
crystal device using same
    1.
    发明授权
    Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same 失效
    铁电手性近晶液晶组合物和使用其的液晶装置

    公开(公告)号:US5512208A

    公开(公告)日:1996-04-30

    申请号:US53828

    申请日:1993-04-30

    摘要: A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, R.sub.2 denotes a linear or branched alkyl group having 1-12 carbon atoms; X.sub.1 denotes a single bond, ##STR2## and at least one compound represented by the following formula (II): ##STR3## wherein R.sub.3 and R.sub.4 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, at least one of R.sub.3 and R.sub.4 being optically active; and X.sub.2 and X.sub.3 respectively denote a single bond, ##STR4##

    摘要翻译: 一种铁电手性近晶液晶组合物,其包含至少一种由下式(I)表示的化合物:其中R 1表示具有1-18个能够具有取代基的碳原子的直链或支链烷基,R2 表示具有1-12个碳原子的直链或支链烷基; (II)表示的至少一种化合物:其中R 3和R 4分别表示直链或支链烷基, 具有能够具有取代基的1-18个碳原子,R3和R4中的至少一个是光学活性的; X2和X3分别表示单键,

    Liquid crystal composition and liquid crystal device using same
    5.
    发明授权
    Liquid crystal composition and liquid crystal device using same 失效
    液晶组合物和使用其的液晶装置

    公开(公告)号:US5139697A

    公开(公告)日:1992-08-18

    申请号:US711566

    申请日:1991-05-30

    IPC分类号: C09K19/46

    CPC分类号: C09K19/46

    摘要: A liquid crystal composition comprises at least one compound represented by the formula [I] below and at least one compound represented by the formula [II] below: ##STR1## wherein R.sub.1 denotes an alkyl group having 1-16 carbon atoms capable of having a substituent; R.sub.2 denotes any one of alkyl group, alkoxy group, alkoxycarbonyl group, acyloxy group and alkoxycarbonyloxy group, each having 1-16 carbon atoms and being capable of having a substituent; and A denotes any one of ##STR2## each capable of having a substituent; and ##STR3## wherein R.sub.3 denotes a linear alkyl group having 1-16 carbon atoms; R.sub.4 denotes a linear alkyl group having 1-12 carbon atoms; X.sub.1 is a single bond, --O--, ##STR4## X.sub.2 is --OCH.sub.2 --, ##STR5## or --CH.sub.2 --; and Z is ##STR6##

    摘要翻译: 液晶组合物包含至少一种由下式[I]表示的化合物和至少一种由下式[II]表示的化合物:其中R 1表示具有1-16个碳原子的烷基 具有取代基; R2表示具有1-16个碳原子并能够具有取代基的烷基,烷氧基,烷氧基羰基,酰氧基和烷氧基羰基氧基中的任一个; A表示能够具有取代基的 中的任一个; 和[II]其中R3表示具有1-16个碳原子的直链烷基; R4表示具有1-12个碳原子的直链烷基; X 1是单键,-O-,X 2是-OCH 2 - ,或-CH 2 - ; 而Z是

    Liquid crystal apparatus and chiral smectic liquid crystal composition
for use therein
    8.
    发明授权
    Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein 失效
    液晶装置及其使用的CHIRAL SMECTIC LIQUID STYSTAL COMPOSITION

    公开(公告)号:US5119219A

    公开(公告)日:1992-06-02

    申请号:US543415

    申请日:1990-06-26

    摘要: A liquid crystal apparatus includes a chiral smectic liquid crystal showing a first and a second orientation state disposed between first and second electrodes of a liquid cell. A drive circuit applies voltages between the first and second electrodes including voltages .vertline.V.sub.S .vertline. and .vertline.V.sub.I .vertline. which provide voltages V.sub.A and V.sub.B (V.sub.B V.sub.A) satisfying the relationship of: .vertline.(V.sub.A -V.sub.B)/(V.sub.A +V.sub.B).vertline.>0.1 at 40.degree. C. V.sub.A is a minimum peak value of a voltage .vertline.V.sub.S .vertline.+.vertline.V.sub.I .vertline. (at a constant pulse width) capable of inverting the first orientation state of the chiral smectic liquid crystal into the second orientation state when a voltage pulse is applied between the first and second electrodes to cause the first orientation state of the chiral smectic liquid crystal and then the voltage .vertline.V.sub.S .vertline.+.vertline.V.sub.I .vertline. is applied between the first and second electrodes as a combination of a voltage .vertline.V.sub.S .vertline. applied to the first electrode and a voltage - V.sub.I .vertline. applied to the second electrode V.sub.B is a value of .vertline.V.sub.S .vertline.+.vertline.V.sub.I .vertline. calculated based on a maximum peak value of a voltage .vertline.V.sub.S .vertline.-.vertline.V.sub.I .vertline. capable of maintaining the first orientation state of the chiral smectic liquid crystal when a voltage pulse is applied between the first and second electrodes to cause the first orientation state and then the voltage .vertline.V.sub.S .vertline.-.vertline.V.sub.I .vertline. is applied between the first and second electrodes as a combination of a voltage .vertline.V.sub.S .vertline. applied to the first electrode and a voltage .vertline.V.sub.I .vertline. applied to the second electrode.